Power transmission device
US8851254B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 13, 2011 |
| Grant date | Oct 7, 2014 |
| Priority date | — |
| Expiry date | Jan 13, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/7072
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A power transmission device has a rigid body that includes a contact portion coming into contact with the first or second friction member and that moves the contact portion from a position of contact with the first or second friction member to a position of no contact with the first and second friction members, an elastic body that applies to the rigid body a force moving the contact portion to a position of contact with the first or second friction member, a first pushing mechanism that applies to the rigid body a pressure of liquid moving the contact portion to a position of contact with the first or second friction member, and a second pushing mechanism that applies to the rigid body a pressure of liquid moving the contact portion to a position of no contact with the first and second friction members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.